Changing hues of migration

Mobility is normal human behavior and a global phenomenon. Our ancestors in the prehistoric era were hunters-gatherers. They were constantly on the move in search of food and shelter. Floods, storms, earthquakes too compelled them to move from one place to the other. Agriculture changed life, and man started to settle at a place. About 96.5 per cent of the global population today lives in countries where they were born. But there are 3.5 per cent who reside in other countries.